Stephen Mrenna and Peter Richardson JHEP05(2004)040 doi:10.1088/1126-6708/2004/05/040
Matching matrix elements and parton showers with HERWIG and PYTHIA
Stephen Mrenna1,2 and Peter Richardson3
Show affiliationsWe report on our exploration of matching matrix element calculations with the parton-shower models contained in the event generators HERWIG and PYTHIA. We describe results for e+e- collisions and for the hadroproduction of W bosons and Drell-Yan pairs. We compare methods based on (1) a strict implementation of ideas proposed by Catani et al., (2) a generalization based on using the internal Sudakov form factors of HERWIG and PYTHIA, and (3) a simpler proposal of M. Mangano. Where appropriate, we show the dependence on various choices of scales and clustering that do not affect the soft and collinear limits of the predictions, but have phenomenological implications. Finally, we comment on how to use these results to state systematic errors on the theoretical predictions.
- Keywords
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E-print Number: hep-ph/0312274
Cited: by |
Refers: to
- PACS
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13.66.Bc Hadron production in e-e+ interactions
13.40.Gp Electromagnetic form factors
13.66.Fg Gauge and Higgs boson production in e-e+ interactions
- Subjects
- Dates
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Issue 05 (May 2004)
Received 14 January 2004, accepted for publication 17 May 2004
Published 11 June 2004
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Matching matrix elements and parton showers with HERWIG and PYTHIA
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